Fans



B. L BRISTOL May 21, 1963 FANS Filed Jan. 6, 1961 Eli 1 ive. 1 a .i.

INVENTOR 6 44? A. 519157-01.-

713W, a lyfiii ATTORNE 5 United States Patent Or snags-as FANS Billy L.Bristol, Silvis, Elk, assignor to Ametelt, line, "Jew York, N.Y., acorporation of Delaware Filed Jan. 6, M61, er. No. $Ll7 7 Claims. or.ass-arr The present invention relates to fans of the bifurcated fancasing type for handling destructive fumes, and particularly to a newand improved mounting for the motor of such fans.

in the handling of destructive fumes, fan casings often constructed witha walled passage extending transversely through a tubular casing,forming duct means on either side of the walled passage that have acommon inlet and outlet. The motor is mounted Within the walled passagemeans and its output shaft passes through one of the walls of the waledpassage, extending into the common inlet or outlet and supportingtherein a fan blade.

A serious problem arises in removably mounting the motor within thewalled passage, particularly in large installations.

The principal object of this invention is to provide a combinedbifurcated fan casing and motor mount that will afford easy removal andreassembly of the fan wheel, motor shaft and motor.

Another object of the invention is to provide such a combined bifurcatedfan casing and motor mounting in which the motor shaft and fan blade maybe slid into and out of proper position within the walled passage withinthe bifurcated casing.

in one aspect of the invention, a generally tubularshaped casing mayhave a walled passage extending transversely through it so as to providebranch conduits on each side of the transverse passage leading from acom mon inlet to a common outlet. There may be an axial slot or similaraperture in the wall of the walled passage that is parallel to thepassage and extends from one end thereof to the center of the tubularcasing. There also may be a removable section of the tubular casingincluding means for effectively closing and hermetically sealing saidslot or aperture. The removable casing may have a portion of the walledpassage integral therewith.

in another aspect of the invention, a motor, supporting a fan blade, maybe mounted on a plate having a right angular ledge portion. The face ofthe plate opposite that to which the motor is fixed, as well as to theouter face of the ledge, may be provided with anti-friction castermeans.

In still another aspect of the invention, a track supporting plate maybe fixed to a wall of the walled passage and it may include a trackmember adapted to re ceive the castered ledge of the motor mountingplate. The length of the track and its supporting plate may besubstantially as long as the walled transverse passage within thecasing.

In still another aspect of the invention, another plate parallel to, andspaced from, the track supporting plate may depend from the walledpassage and be of a width such as to overlie one longitudinal edge ofthe motor mounting plate when the ledge of the latter rests within thetrack on the track supporting plate.

In a still further aspect of the invention, rollers may be mounted onthe motor mounting plate, for cooperation with the depending plate tothereby complete a track arrangement along which the motor and itsmounting plate may be slid in positioning it centrally of the walledpassage.

In still another aspect of the invention, fastening may be providedbetween the motor mounting plate the track supporting plate forremovably attaching the Elf?) 17 is shown as located within the outletin.

r f ce Bflhho to Patented May 21, T363 motor mounting plate in positionto locate the fan properly within the inlet or outlet of the bifurcatedcasing.

The above, other objects and advantages of the invention will becomeapparent from the following specification and accompanying drawing whichis merely exemplary.

In the drawing:

FIG. 1 is an exploded top plan view of a fan casing to which theprinciples of the invention have been applied;

FIG. 2 is an enlarged view taken substantially along line 2-2 of PEG. 1;

PKG. 3 is a perspective View of the motor mounting plate shown in FIG.2;

FIG. 4 is a plan view taken substantially along line i 4 f FlG. 2; and

FIG. 5 is a sectional elevational view taken substantiaily along line5-5 of FIG. 4.

Referring to the drawing, the principles of the invention are shown asapplied to a fan casing all having a passage E11 extending transverselytherethrough that is surrounded by a wall 12 which divides the casingit) into two ducts l3 and Ed on opposite sides of the passage ill andwhich ducts lead from a common inlet and to a common outlet 16. in theembodiment disclosed, a fan It may be attached to the output shaft 18 ofan electric motor 19. The upper portion fill of the wall 12 may beprovided with a siot 21 extending from the one end 22 of the passageftft to the center thereof. It is adapted to receive the shaft in ofmotor 19 as the motor and fan are moved to the center of the passage itwith the fan 17 outside of the passage 11 and within the outlet 16.

A portion of a collar 23 may be mounted at the inner terminus of theslot 21 which forms, with a portion 24 on a closure 25 for the slot Zll,a seal through which the shaft 18 and a sleeve 26 on fan 17 pass andwhich prevents the fiuid being conveyed through the casing ill fromleaking into the passage 11 and affecting the motor 19.

in order to permit assembly and removal of the motor 1% and fan 1'7, aportion 27 of casing is may be removably attached to the casing it) byremovable bolts along flanges 23, 2?, 3t 31, 32 and 33:.

In relatively large installations, the sizes of motor 19 and fan 17 arerelatively large, and the distance to the midpoint of passage ii is alsolarge. Since the fan 17 and motor 1? are assembled and removed from thecasing i with ducts leading upwardly from the casing 1%, and with onlyportion 27 removed, it appears quite evident that the mounting of motor19 in proper position within passage lll becomes asubstantial task.

Referring to FIG. 3, a motor mounting plate 34 may be provided with aflange forming a ledge 35. Ball bearing caste-rs 3-6 and 37 may beattached to the ledge 35, and similar casters 38, 39, iii and 41 may beattached to the one face of the plate 34, preferably with the ballsthereof extending from the face of plate from which ledge 35 extends.Each of the bail casters may comprise a housing 42 within which a ball43 is rotatably mounted, with a substantial portion thereof extendingoutwardly from a collar 4d. The housing 42 may have a threaded stud 45extending from housing 42 oppositely from ball 43, and it may receive anut 46 that abuts against the top of a frame 47 on plate 34 within whichhousing 42 is received.

The edges of plate 34, at points opposite the ledge 35-, may be notchedat 43 and 49 for the reception of rolls 5d and 51. These rolls may bemetal sleeves impregnated with lubricant through which may extend headedrivets 52 and 53, the shanks of which may be Welded or otherwisefastened to the edges of plate 34. Four holes 54, 55, 56 and 57 mayextend through plate 34 through which bolts may pass for attaching themotor 19 to plate 34 on the face thereof opposite that from which theball bearing casters extend.

Referring to FIG. 5, within the passage 11 and spaced a small distancefrom one wall 12, a plate 58 may be rigid ly mounted. A member 59 may befixed to plate 53 and it may extend along a line parallel to alongitudinal axis of passage 11. The member 59 may include a flange 6t)forming a trough 61 within which the ledge 35 of plate 34 is adapted tobe received. Another short plate 62 may fixedly depend from wall 12 inspaced relation to plate 58 and in alignment with the flange so ofmember 59.

The construction and arrangement of the parts are such that the plate 34with motor 19 mounted thereon may have its edge containing ledge 35 fedinto the trough 61 with the ball bearing casters 36, $7 on the ledgecontacting the bottom wall of trough 61. The top edge of plate 34 may bereceived between plates 62 and 58 with rolls t and 51 contacting the oneface of plate 62. The ball bearing casters 38, 39, 4t and 41 will thencontact plate 58 so that the assembly can, with facility, he slid intothe passage 11 to the center thereof with shaft 18, sleeve 26 and fan 17located along the centerline of outlet 16.

Referring again to FIGS. 4 and 5, threaded bosses 63, 64, 65 and 56 maybe rigidly attached to plate 58 in position to correctly locate motor 19within passage 11. Cap screws 67 may extend through the plate 3 3- tothereby fix the motor 19 and plate 34 in the proper position withinpassage 11.

From the foregoing it is evident that removal of portion 27 of casing 16and the removal of cap screws d7 will permit sliding plate 34, motor 19and fan 17 outwardly of passage lit to facilitate maintenance of motor19 and replacement of the fan 17 if necessary.

Although the various features of the fan and motor mounting have beenshown and described in detail to fully disclose one embodiment of theinvention, it will be evident that changes may be made in such detailsand certain features may be used without others without departing fromthe principles of the invention.

What is claimed is:

1. Apparatus comprising in combination, a hollow tubular casing with awalled passage extending transversely therethrough; a first plateattached to a passage Wall in parallel spaced relation thereto; ahorizontally disposed member parallel with a through axis of saidpassage, fixed to said first plate and forming a first trough-like trackalong said first plate; another plate attached to said passage wall inspaced relation to said first plate and forming an inverted trough-liketrack aligned with said first trough-like track; a plate having a motorfixedly mounted thereon and arranged so that its longitudinal edges arereceived within said trough-like tracks; and anti-friction means betweensaid motor mounting plate and said troughlike tracks.

2. Apparatus comprising in combination, a hollow tubular casing with awalled passage extending transversely therethrough; a slot in one endwall of said passage and extending in a direction lengthwise of saidpassage; a first plate attached to a passage wall in parallel spacedrelation thereto; a horizontally disposed member parallel with a throughaxis of said passage, fixed to said first plate and forming a firsttrough-like track along said first plate; another plate attached to saidpassage wall in spaced relation to said first plate and forming aninverted trough-like track aligned with said first trough-like track; aplate having a motor fixedly mounted thereon and arranged so that itslongitudinal edges are received within said trough-like tracks and theshaft of said motor registers with said slot; anti-friction meansbetween said motor mounting plate and said trough-like tracks; and aremovable portion of said casing adapted to close said slot after saidmotor is in position within said passage.

3. Apparatus comprising in combination, a hollow tubular casing with awalled passage extending trans- 545 l l l trough-like track aligned Withsaid first trough-like track;

a plate having a motor fixedly mounted thereon and arranged so that itslongitudinal edges are received within said trough-like tracks and theshaft of said motor registers with said slot; anti-friction meansbetween said motor mounting plate and said trough-like tracks; aremovable portion of said casing adapted to close said slot after saidmotor is in position Within said passage; and means for removably fixingsaid motor mounting plate to said first mentioned plate.

4. In a fan unit having a hollow tubular casing with a walled passageextending transversely therethrough, a slot in one end wall of saidpassage and extending in a direction lengthwise of said passage, a firstplate attached to a passage wall in parallel spaced relation thereto; ahorizontally disposed member parallel with a through axis of saidpassage, fixed to said first plate and forming a first trough-like trackalong said first plate; another plate attached to said passage wall inspaced relation to said first plate and forming an inverted trough-liketrack aligned with said first trough-like track; a plate having a motorfixedly mounted thereon and arranged so that its longitudinal edges arereceived within said trough-like tracks, and such that the shaft of saidmotor registers with said slot; a fan attached to said shaft and locatedwithin said casing; anti-friction means between said motor mountingplate and said trough-like tracks; and a removable portion of saidcasing adapted to close said slot after said motor is in position withinsaid passage and said fan is within said casing.

5. In a fan unit having a hollow tubular casing with a Walled passageextending transversely therethrough, a slot in one end wall of saidpassage and extending in a direction lentghwise of said passage;horizontally disposed track means within said passage includingvertically spaced track means; a vertically disposed plate adapted tohave mounted on it a motor having a shaft, and having one edge fordisposition within one of said track means such that the motor shaftregisters with said slot; anti-friction means on at least one of saidplate and track means; a fan for connection to said shaft anddisposition within said casing; and a removable portion of said casingfor closing said slot means when the motor is in position within saidpassage.

6. In a fan unit having a hollow tubular casing with a walled passageextending transversely therethrough, a slot in one end wall of saidpassage and extending in a direction lengthwise of said passage; spacedtrough-like track means mounted within said passage and extending in adirection lengthwise of said passage; a plate having antifriction meansthereon disposed within said track means; a motor mounted on said plateand having a shaft located in said slot; a fan connected to said shaftand located within said casing; and a removable portion of said casingadapted to close said slot when the motor is in position within saidpassage.

7. In a fan unit having a hollow tubular casing with a walled passageextending transversely therethrough, a slot in one end wall of saidpassage and extending in a direction lengthwise of said passage;horizontally disposed track means within said passage includingvertically spaced track members; a vertically disposed plate adapted tohave mounted on it a motor having a shaft, and having one edge fordisposition within one of said track members such that the motor shaftregisters with said slot; antifriction means on at least one of saidplate and track means; a fan for connection to said shaft anddisposition References Cited in the file of this patent UNITED STATESPATENTS Wessel Mar. 15, 1949 Hull Aug. 4, 1959 Harp Apr. 12, 1960

1. APPARATUS COMPRISING IN COMBINATION, A HOLLOW TUBULAR CASING WITH AWALLED PASSAGE EXTENDING TRANSVERSELY THERETHROUGH; A FIRST PLATEATTACHED TO A PASSAGE WALL IN PARALLEL SPACED RELATION THERETO; AHORIZONTALLY DISPOSED MEMBER PARALLEL WITH A THROUGH AXIS OF SAIDPASSAGE, FIXED TO SAID FIRST PLATE AND FORMING A FIRST TROUGH-LIKE TRACKALONG SAID FIRST PLATE; ANOTHER PLATE ATTACHED TO SAID PASSAGE WALL INSPACED RELATION TO SAID FIRST PLATE AND FORMING ING AN INVERTEDTROUGH-LIKE TRACK ALIGNED WITH SAID FIRST TROUGH-LIKE TRACK, A PLATEHAVING A MOTOR FIXEDLY MOUNTED THEREON AND ARRANGED SO THAT ITSLONGITUDINAL EDGES ARE RECEIVED WITHIN SAID TROUGH-LIKE TRACKS; ANDANTI-FRICTION MEANS BETWEEN SAID MOTOR MOUNTING PLATE AND SAIDTROUGHLIKE TRACKS.